249236401565713 has 4 divisors (see below), whose sum is σ = 251055645372900. Its totient is φ = 247417157758528.

The previous prime is 249236401565693. The next prime is 249236401565729. The reversal of 249236401565713 is 317565104632942.

249236401565713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211679016951249 + 37557384614464 = 14549193^2 + 6128408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249236401565713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249236401565783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909621903388 + ... + 909621903661.

It is an arithmetic number, because the mean of its divisors is an integer number (62763911343225).

Almost surely, 2^{249236401565713} is an apocalyptic number.

It is an amenable number.

249236401565713 is a deficient number, since it is larger than the sum of its proper divisors (1819243807187).

249236401565713 is a wasteful number, since it uses less digits than its factorization.

249236401565713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819243807186.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 249236401565713 in words is "two hundred forty-nine trillion, two hundred thirty-six billion, four hundred one million, five hundred sixty-five thousand, seven hundred thirteen".